Nested Imports

[CanadaGuy]

I'm trying to create modules for my application that are themselves testable on their own. I would like to have the following directory structure:

\application.py
\support\module1.py
\support\module2.py

application.py depends on both module1.py and module2.py.
module1.py is also dependent directly on module2.py

My way to make this work so far is the following in module1.py

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if __name__ == "__main__":     import module2 else:        import support.module2

Without that, I get various "module not found" issues. I did a lot of reading on absolute and relative imports, but I can't identify my case among the many examples presented. My alternative plan was to leave everything flat for now (no directories) so that imports are nice and straightforward. But for a larger application, I know this would just make a big mess.

Ideas?

[Larz60+]

use try except, here's an extreme example from the lxml manual:

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try:     from lxml import etree     print("running with lxml.etree") except ImportError:     try:         # Python 2.5         import xml.etree.cElementTree as etree         print("running with cElementTree on Python 2.5+")     except ImportError:         try:             # Python 2.5             import xml.etree.ElementTree as etree             print("running with ElementTree on Python 2.5+")         except ImportError:             try:                 # normal cElementTree install                 import cElementTree as etree                 print("running with cElementTree")             except ImportError:                     try:                     # normal ElementTree install                     import elementtree.ElementTree as etree                     print("running with ElementTree")                 except ImportError:                     print("Failed to import ElementTree from any known place")

[CanadaGuy]

Thanks for the reply. Is try/except a better approach than using an if statement? In this case, I know exactly what statement will work under each condition so try except seems a little less direct.

[Larz60+]

'if' statements will not stop error events from crashing system, try/except will

[CanadaGuy]

'if' statements will not stop error events from crashing system, try/except will

True. That gives me something to think about.